i recently got an ASUS P3B-F Slot1 Mobo for my new computer i was building and it runs a 500MHz Slot 1 P3 at 750MHz quite confortably however i got an ASUS S370 adapter card (witch its said in the manual that there compadible) and when i put my 1GHz P3 on the card than install it in the computer it doesnt work. But when i install an older Celeron (the non CuMine one) at 500MHz it works. any ideas Not a compatable CPU Different bus speed, architecture, etc.i dont understand its just a P3 CuMine PGA370 prosser operateing at 1000/256/133/1.75v the prosser that i have operateing in it that works says 667/256/133/1.75vMaybe you need to mess around with the jumpers a bit until you get the settings right. Try resetting your CMOS to default after having installed the new processor.. tried all of that. i tried it running in JumperFree mode in Jumper mode with the correctl clock multipliers and FBS set as well as velies at lower settings as well as reseting the cmos between every try.Maybe the BIOS needs to be flashed to support this processor. ACCORDING to ASUStek's website:

"P3B-F Beta BIOS 1008.004
Microcode update for Cu-Mine C-0 stepping (SC242) Cu-Mine C-0 stepping (PGA370)
Revise legacy USB code to Fix Win2K reboot failure
Fix data corrupt when USB MOUSE/PS2 KB or USB KB/PS2 Mouse ACTIVE at the same time.
Revise CPU multiplier handling for unlocked CPU. "

1008 Beta 004 is the version this mobo hasContact Asus and ask them what to do, perhaps they can provide you with a newer BIOS. my friend who works for Intel suggests that i use an older BIOS revrision that isnt a Beta version (becasue CuMine support is supposivly somthing that has been around since the mobo version was 1.0) and that may fix the poblem and ASUS doensth have a technical support phoneline for north amarica I think E-mailing would do more good.